CN102187725A - Carrier aggregation - Google Patents

Abstract

A method and apparatus for handling a control channel for carrier aggregation in wireless communications. The method includes determining which component carrier to listen to, detecting the downlink control channel, processing mapping information related to downlink and uplink transmissions and operating discontinuous reception with respect to carrier aggregation. The method also includes detecting a component carrier, determining the component carrier type and locating the anchor component carrier, if necessary, where the anchor component carrier carries the carrier aggregation information.

Description

Carrier aggregation

Technical field

The application relates to radio communication.

Background technology

The data rate that Long Term Evolution (LTE) is supported reaches down link 100Mbps and up link 50Mbps.The LTE of evolution (LTE-A) compares with the LTE that has used carrier aggregation (aggregation) and other technologies, has improved five times on downlink data rate.Carrier aggregation for example can support that nearly the flexible bandwidth of 100MHz distributes.In LTE-A, carrier wave is called as component (component) carrier wave.

LTE-A can use in symmetry relevant with component carrier quantity with the component carrier size and non-symmetrical configuration.This be by use or polymerization nearly the component carrier of five 20MHz realize.For example, the multiple component carriers LTE-A polymerization of single continuous down link (DL) 40MHz can be matched with single 15MHz up link (UL) carrier wave.Therefore, discontinuous LTE-A DL polymerization allocation of carriers can be not consistent with UL polymerization allocation of carriers yet.

The polymerization carrier bandwidths can be continuous, and in this case, a plurality of adjacent component carrier waves can take continuous 10MHz, 40MHz or 60MHz.The polymerization carrier bandwidths also can be discontinuous, and in this case, a polymerization carrier wave can be polymerized by a plurality of but not necessarily adjacent component carrier.For example, the DL component carrier of 15MHz can with the second non-conterminous DL component carrier phase-polymerization of 10MHz, the aggregate bandwidth that produces 25MHz altogether thus is to be used for LTE-A.The pairing distance that can also change in addition, is provided with component carrier.For example, the component carrier of 15MHz and the 10MHz 30MHz of can being separated by, and in another kind is provided with, their 20MHz of only being separated by.Equally, the quantity of component carrier, size and continuity can be different in UL and DL.

In order to insert LTE-A to carry out DL and UL transmission, wireless transmitter/receiver unit (WTRU) need be known DL and the configuration of UL carrier wave aspect component carrier pairing, random access parameter and other LTE-A system-specific information of bandwidth, DL and UL.Also need from the base station to WTRU transmission carrier aggregation information, for example carrier identification.Can carry with carrier aggregation by physical downlink control channel (PDCCH) and carry out relevant control information.This just needs the requirement of definition PDCCH, and WTRU need know time and the frequency location of PDCCH, to obtain control information.

Summary of the invention

A kind of control channel signaling of the radio communication that is used for supporting carrier aggregation and the method and apparatus of catching.Described method comprise determine to monitor which component carrier, detect downlink control channel, map information that processing is relevant with down link and ul transmissions and carrier aggregation used discontinuous reception.Described method also comprises the detected components carrier wave, determine the component carrier type and in the case of necessary to carrying the grappling component carrier location of carrier aggregation information.

Description of drawings

Can obtain more detailed understanding from following specification, this specification is described with way of example in conjunction with the accompanying drawings, wherein:

Fig. 1 is a kind of execution mode of the wireless communication system/access network of Long Term Evolution (LTE);

Fig. 2 is the wireless transmitter/receiver unit of LTE wireless communication system and the schematic block diagram of base station; And

Fig. 3 is the example of different component carriers.

Embodiment

When mentioning hereinafter, term " wireless transmitter/receiver unit (WTRU) " includes but not limited to the subscriber equipment that can work of subscriber equipment (UE), mobile radio station, fixing or moving user unit, beep-pager, cell phone, PDA(Personal Digital Assistant), computer or any other type in wireless environment.When mentioning hereinafter, term " base station " includes but not limited to the interface equipment that can work of Node B, station control, access point (AP) or any other type in wireless environment.

Fig. 1 shows and comprises that evolution works with Long Term Evolution (LTE) wireless communication system/access network 100 of terrestrial radio access network (E-UTRAN) 105.This E-UTRAN 105 comprises WTRU 110 and a plurality of evolved Node B (eNB) 120.WTRU 110 communicates by letter with eNB 120.ENB 120 uses X2 interface to interconnect.Each eNB 120 is connected with Mobility Management Entity (MME)/gateway (S-GW) 130 by the S1 interface.Though in Fig. 1, only show a WTRU 110 and three eNB 120, should be appreciated that in wireless communication system access network 200, can comprise the combination in any of wireless device and wireline equipment.

Fig. 2 is the expressivity block diagram of LTE wireless communication system 200, and this system 200 comprises WTRU 110, eNB 120 and MME/S-GW 130.As shown in Figure 2, WTRU 110, eNB 120 and MME/S-GW 130 are configured to carry out the control channel signaling that realizes carrier aggregation and catch.

Except the assembly that can find in typical WTRU, WTRU 110 also comprises processor 216, at least one transceiver 214, optional battery 220 and antenna 218, and described processor 216 has the memory 222 of optional link.Processor 216 is configured to carry out the control channel signaling that realizes carrier aggregation and catch.Transceiver 214 is communicated by letter with antenna 218 with processor 216, to realize the transmission and the reception of radio communication.220 pairs of transceivers 214 of battery and processor 216 power supplies in WTRU 110, have been used under the situation of battery 220.

Except the assembly that can find in typical eNB, eNB 120 also comprises processor 217, transceiver 219 and antenna 221, and described processor 217 has the memory 215 of optional link.This processor 217 is configured to carry out the control channel signaling that realizes carrier aggregation and catch.Transceiver 219 is communicated by letter with antenna 221 with processor 217, to realize the transmission and the reception of radio communication.ENB 120 is connected with Mobility Management Entity/gateway (MME/S-GW) 130, and this MME/S-GW 130 comprises processor 233, and processor 233 has the memory 234 of optional link.

LTE-senior (LTE-A) has used carrier aggregation, and in LTE-A, the LTE-A sub-district is made up of a plurality of LTE carrier waves, and each carrier wave can reach 20MHz, and can be continuous.The transmission of down link and up link may need carrier aggregation information from base station transmits to wireless transmitter/receiver unit (WTRU).

Disclosed herein is to be used to indicate the illustrative methods that can use or use carrier aggregation.Be noted that LTE-A may need oppositely (backward) and LTE version 8 and 9 compatibilities, and therefore one, a plurality of or all component carriers can support the operation based on LTE early.Compatible component carrier can carry synchronizing channel (SCH), broadcast channel (BCH) and other LTE channels.It is also noted that the LTE WTRU that operates may and not know oneself to be arranged in LTE-A carrier aggregation sub-district in the carrier aggregation environment.This need use network mechanism to prevent too much switching (HO) and cell load equilibrium.

A kind of illustrative methods that is used to transmit the carrier aggregation applicability has been used broadcast channel.The compatibility of LTE is meant that one, a plurality of or all component carriers can carry LTE-A BCH with to the WTRU of compatible LTE-A notice carrier aggregation.This LTE-A BCH is the expansion of LTE BCH, and it can not take place to disturb and can be compatible with the LTE operation with the LTE operation.This LTE-A BCH carries the control information specific to sub-district relevant with LTE-A described herein.The described control information specific to sub-district relevant with LTE-A can be used as new Master Information Block (MIB) and is carried among the LTE-A master BCH (P-BCH), and this LTE-A P-BCH can be in can the carrier wave of compatible LTE, or in independent LTE-A component carrier.Should the control information specific to sub-district relevant can also be carried among the dynamic BCH of LTE-A (D-BCH) as new system information block (SIB) with LTE-A, this LTE-A D-BCH can be in can the carrier wave of compatible LTE, or in independent LTE-A component carrier.

As hereinafter disclosed in conjunction with illustrative embodiments, with the component carrier of the WTRU compatibility of LTE version 8 can also be the anchor carrier of carrying the specific control information of LTE-A.The new MIB and the new SIB that can be used for LTE-A WTRU for this grappling component carrier definition.Can also exist other not with the component carrier of the WTRU compatibility of version 8.The current structure that can in this grappling component carrier, keep LTE WTRU.What for example, the synchronizing channel of carrying MIB and SIB and broadcast channel can be with versions 8 is identical.New MIB that is used for LTE-A WTRU that transmits in this grappling component carrier and/or new SIB can be only readable to LTE-A WTRU.New MIB and new SIB can with MIB and the SIB time and/or the channeling of LTE version 8.And LTE-A WTRU can also use new radio net temporary identifier (RNTI) to be used for new MIB and new SIB.MIB and the SIB readable to LTE-A WTRU can be present in all grappling component carriers.New MIB and new SIB can classify based on LTE-A WTRU.

As hereinafter disclosed in conjunction with illustrative embodiments, with the component carrier of the WTRU compatibility of LTE version 8 can also be anchor carrier with extra SIB, described extra SIB defines for LTE-A WTRU in this grappling component carrier.Can also exist other not with the component carrier of the WTRU compatibility of version 8.Can in other component carriers, define new MIB and/or the new SIB of volume for LTE-A WTRU.

In another illustrative methods, can use not message based method to come the indication carrier wave polymerization.The information of relevant down link component carrier can implicitly be carried in the synchronizing channel.For example, to by the base station, select/dispose, when being detected these synchronizing sequences, then know these component carriers of polymerization thus by WTRU as the employed synchronizing sequence of e Node B about component carrier.

In another illustrative methods, can in existing MIB, use existing idle code-point to indicate the polymerization of MHz such as 40,60,80.

In another illustrative methods, idle extended bit can be used for some other positions in existing MIB, and these positions can have more detailed information about all possible band width configuration.For example, can use SIB1 or its expansion.

In another illustrative methods, LTE-A control and/or system information can be controlled (RRC) signaling with radio resource and transmit.In this example, do not define new MIB or new SIB for LTE-A WTRU.When WTRU with after system is connected, can come to transmit information needed by the higher level signaling with signal.In order to reduce to postpone, can also during Random Access Channel (RACH) process, transmit this information, for example use message 4.

In another illustrative methods, component carrier not with the WTRU compatibility of version 8, and can not be found by the WTRU of version 8.Can in these component carriers, define new synchronizing channel, new MIB and new SIB.Channel that these are new and information are readable to LTE-A WTRU.Can also define the subcarrier that to be found by any WTRU.These carrier waves can be found via the signaling on other carrier waves, and be used to increase transmission bandwidth in needs.The identical sub-district ID or the function of some other implicit expression can be used for the component carrier that will be aggregated.For example, when WTRU has detected identical sub-district ID on a plurality of component carriers, represent that then these carrier waves are aggregated.Can there be the tabulation of presorting at the component carrier that is aggregated.Can transmit this tabulation to WTRU via disclosed signaling herein.

Hereinafter in another illustrative methods in conjunction with illustrative embodiments and up link, detect all or the part component carrier by WTRU.By the whole component carriers startup random access procedures of WTRU to its desired polymerization.For example, if 5 component carriers are arranged, and WTRU only wishes to use first and second, then this insert at random at be these two component carriers.For the uplink carrier polymerization, can use RRC signaling or random accessing message, for example message 4.

In another illustrative methods, each component carrier is read respectively and is merged together by BCH information is compared and mates subsequently.For example, can be in BCH usage flag to indicate this component carrier be the part of polymerization.In this case, the highest significant position (MSB) of the redundant mib information that is transmitted on the MIB on each independent component carrier, for example sequence frame number (SFN) may need to merge.

In another illustrative methods, component carrier can be the WTRU compatibility with LTE version 8, and can be the part of polymerization.But this component carrier does not carry LTE-A P-BCH.This component carrier can be the part from/main frame system, and in this mechanism, described component carrier can be broadcasted skew, for example with the pairing distance of principal component carrier wave.This skew can be indicated the component carrier (for example, main carrier) that LTE-ABCH is provided with marking.

Discussed herein and in conjunction with the disclosed example of illustrative embodiments for each, if the component carrier of LTE-A system information is not carried in LTE-A WTRU preemption, then this WTRU can be redirected to the component carrier that carries the LTE-A system information.

Equally, LTE-A WTRU can receive about monitoring which or which component carrier to be used for the information from the down link control information of LTE-A BCH or L1 or L2/3 signaling.

Below disclosed be the illustrative methods that is used to detect down link control information.Can come in all candidates, to detect the downlink control channel of himself by using blind Detecting after the WTRU, wherein said candidate be one or more be all possible control channel at the control channel place of target with specific WTRU.As described herein, down control channel can be the physical downlink control channel (PDCCH) that can be used for sending the LTE-A control information.When having used a plurality of PDCCH at component carrier, for example, when each component carrier all had a PDCCH, the quantity of blind Detecting can the phenomenal growth along with the quantity of PDCCH.Can reduce the quantity of blind Detecting by restriction specific to the search volume of WTRU.By the higher level signaling this search volume is sent to WTRU with signal.For quantity and the higher level signaling consumption that reduces blind Detecting, can use identical search volume to all component carriers, for example, the employed search volume of first carrier.

Below disclosed be the example of the denotable content of control information.In an example, the LTE-A control information can be indicated the position of the down link data mandate that is used for LTE-A WTRU.In an illustrative embodiments, the position of down link data mandate can be in the component carrier identical with the component carrier that receives control information.In another illustrative embodiments, the position of down link data mandate can be in the component carrier different with the component carrier that receives control information.In another illustrative embodiments, if used a plurality of component carriers to carry the position of down link data mandate, then the position of down link data mandate can be contained in or not be comprised in the component carrier identical with the component carrier that receives control information.

The down link data mandate can be indicated pre-authorization.For example, in the Transmission Time Interval before actual grant (TTI), WTRU can receive pre-authorization, and this pre-authorization is used for notifying WTRU to send actual grant at next TTI.Described pre-authorization can also designation data can send on which or which component carrier.Like this, LTE-A WTRU can reduce the internal memory of the down link data that is used to cushion other WTRU.

WTRU can be configured to handle the down link data mandate that one or more symbol arrived before data arrive.The LTE-A subframe can comprise the position than control character more forward in LTE, to allow the WTRU operation than low-complexity.

Below disclosed example be to be how to map to component carrier based on the quantity of the size of total aggregate bandwidth, component carrier with in these disclosed other factors at least about physical downlink control channel (PDCCH) and this channel.

In one embodiment, WTRU is configured to handle following situation: component carrier vary in size and its summation be less than or equal to 20MHz maximum LTE bandwidth (for example, two carrier waves are 10MHz and 5MHz, or two carrier waves each all be 10MHz).Can use a PDCCH at a plurality of component carriers.For example, PDCCH who is used for (10+10) MHz can use with at the identical control channel form of LTE.

In another embodiment, control channel, for example PDCCH can be used for one group and comprise nearly a plurality of down link component carriers of all available component carriers.Can transmit this PDCCH on one in described a plurality of down link component carriers.WTRU is configured to detect this PDCCH, and does not need to search for the every other component carrier in described group.If necessary, this PDCCH can be converted to another component carrier, can the position of this PDCCH be sent to WTRU by L1 or L2/L3 signaling or based on the implicit expression mapping of deriving from sequence frame number (SFN), TTI index, WTRU ID etc.

In some cases, can in all or part component carrier, use identical frequency resource.For example, for WTRU, might the whole or most resources on all component carriers all will be used for down link or ul transmissions simultaneously with peak rate requirement, or by WTRU report broadband CQI.Can also be by in (with in component carrier) on a plurality of component carriers transmission being encoded and distributing, repeats identical data on these same asset at different component carriers, in different component carriers, uses different redundancy versions or when these component carrier generation frequency hoppings, the same asset on a plurality of component carriers is used for frequency diversity.

When using the method for a PDCCH of one-component carrier wave, need not send independent PDCCH at all component carriers.If used identical HARQ process, then can come pointer that some subclass of all component carriers or component carrier have been used a PDCCH by L1 or L2/L3 signaling at component carrier.If used independent HARQ process, then can use less PDCCH form at other component carriers at component carrier.These forms need not carry public information, for example resource allocation, MIMO information etc.

When using a PDCCH, indicating by L1 or L2/L3 signaling at a plurality of component carriers (comprising all).This PDCCH form comprises the public information that is applied to all component carriers, for example resource allocation, MIMO etc.

Under the situation that component carrier varies in size, the component carrier of all operations can have identical distribution.Therefore, WTRU and base station need a kind of rule to determine how to embody distribution in other component carriers.For example, if Resource Block (RB) 50-100 has been used in the indication of the PDCCH in component carrier A, but duplicating the attached component carrier of described distribution, being among the component carrier B, have only 75 RB, this just needs to determine the distribution of component carrier B.In this case, described rule can determine that component carrier B should use RB 50-75 also to be to use RB 25-75.

At PDCCH and be used to transmit mapping between the component carrier of shared data channel, for example physical down link sharing channel (PDSCH) can be by the higher level signaling, be that L1 signaling (PDCCH also carries carrier index afterwards) realizes and/or implicitly realized by the component carrier that transmits PDCCH.When using the L1 signaling to come assignment information in the mandate of indicating downlink link is that the PDCCH district of having carried one or more index of carrier wave can be known as the carrier wave indicator field when being used for which carrier wave.After PDCCH is decoded, WTRU will use indicated carrier wave to come the receiving downlink transmission.

In the LTE downlink subframe, first OFDM (OFDM) symbol can comprise physical control format indicator channel (PCFICH), and first group one to K OFDM (OFDM) symbol (for example can be used for communications of control data, K can reach preceding four OFDM symbols, but be not limited to this quantity), remaining OFDM symbol then can be used for transfer of data.The quantity that is used for the OFDM symbol of communications of control data is notified with signal at PCFICH.PCFICH can be with zero notifying with signal to K OFDM symbol of being used to carry control data.In component carrier, comprised in the execution mode of PDCCH, can with the component carrier identical or different for component carrier that PDSCH dispatched in carry PDCCH.When transmitting PDCCH in another component carrier, WTRU still needs to know in (having PDSCH's) target component carrier wave has be used for control data for what OFDM symbols.Therefore, use following restrictive condition.Usually in all component carriers, all transmit PCFICH, and do not consider the position of PDCCH.Therefore, in each component carrier, all may have independently controlled area size.

When WTRU detects PCFICH in component carrier, as PCFICH indicated be used at the OFDM symbol quantity of target component carrier wave control data transmission decoded.This comprises that zero OFDM symbol is used for the possibility of control data transmission.

In another embodiment, can be in the one-component carrier wave, for example in first (primary) component carrier, transmit and be used for PCFICH all or the part component carrier.Like this, WTRU can be known the quantity of the PDCCH symbol in each component carrier, and can determine the quantity of the data symbol in each component carrier.

In one or more component carriers, transmit PCFICH by the e Node B, how many PDCCH symbols are arranged in one or more component carriers with indication.The e Node B will be by specifying distance of zero mark degree PDCCH district (it is low hereinafter to be called PDCCH-) to indicate distance of zero mark degree PDCCH district in corresponding PCFICH.Component carrier with distance of zero mark degree PDCCH district must be associated with the component carrier with the PDCCH that is provided by the e Node B.The e Node B will indicate PDCCH-harmonic component carrier wave to increase available resource block, to be used for the PDSCH transfer of data to WTRU.

Disclosed at this is the method that is used for sending with signal the carrier component configuration.Usually, the quantity of up link and down link component carrier is restricted respectively.Replacedly, the combination that is allowed (with the form of polymerization quantity and/or uplink/downlink pairing) is restricted, and described configuration sends with signal via BCH (under the situation of the asymmetric polymerization of sub-district) or L2/3 signaling (under the situation of the asymmetric polymerization of WTRU).

When the quantity of the quantity of down link component carrier and up link component carrier not simultaneously, (that is, for the asymmetric uplink/downlink component carrier polymerization of PDCCH signaling) may be used to the PDCCH signaling in this disclosed any method.For the situation of asymmetric uplink/downlink, the size of each component carrier can be different in down link or up link with the quantity of component carrier.And the quantity of up link and down link component carrier also can be different.For given WTRU in this case, the quantity of movable (active) component carrier can be less than the summation of component carrier quantity in up link or the down link.In disclosed herein " independently " method, very the single up link component carrier of Lock-in is associated with each down link component carrier, and some up link component carriers situation about being associated with a plurality of down link component carriers.Uplink/downlink pairing specific to WTRU can also be used for load balance (for example, considering 3 downlink carriers and 2 up link component carriers).On given up link component carrier, produce bit specific to the uplink/downlink pairing meeting of sub-district and (for example match more load due to the uplink/downlink of WTRU, consider the situation of 3 up link component carriers, one of them up link component carrier is used by all WTRU).

Below disclosed be the illustrative methods that is used for uplink configuration about carrier wave configuration.In LTE-A, the e Node B can be determined uplink resource allocation according to the WTRU feedback, offered load and other information that receive.Uplink scheduling grant will be given WTRU via down link control information (DCI) with signalisation on PDCCH.Term DCI and PDCCH can exchange use.As described here, in order to support, for example be the downlink transmission bandwidth of 100MHz greater than 20MHz, carrier aggregation is very important in LTE-A.Owing to used carrier aggregation in UL, and the possibility of the asymmetric carrier aggregation of UL/DL can cause the mapping difficulty, so the mapping (also being carried on the PDCCH) of up link (UL) scheduling authorization is also extremely important.This asymmetry can be applied to carrier wave size and number of carriers simultaneously, that is, the DL carrier wave of a 20MHz can match with the UL carrier wave of two 5MHz.

UL scheduling authorization signaling entrained among the PDCCH is significant in carrier aggregation.UL scheduling authorization signaling can depend on polymer grade that is used for medium access control preparative layer (MAC) and the polymer grade that is used for physical layer (PHY).In addition, also should consider downward compatibility for LTE version 8.

Disclose a kind of method in one embodiment, this method is used for the uplink grant of each UL carrier wave is mapped to single DL carrier wave and do not consider the UL/DL asymmetry.The mapping of uplink grant can be cured as for all possible UL/DL polymerization situation.This mapping can be that fix or semi-static.This mapping can be by finishing specific to the signaling of WTRU or by the higher level signaling specific to the sub-district.When having a plurality of DL component carrier, this UL authorizes frequency hopping on the different DL carrier waves in different TTI.This frequency hopping mode can be by giving WTRU with signalisation specific to the signaling of sub-district or specific to the higher level signaling of WTRU.Replacedly, also can determine this frequency hopping, for example use the cyclic shift of modulo operation by pre-defined rule.

If use specific signaling or higher level signaling to authorize the mapping indication to give WTRU UL, and WTRU uses semi-static process to read this signaling, and then WTRU decodes receiving when specifying component carrier wherein UL authorized.

If determine that by pre-defined rule then WTRU uses modulo operation to determine the frequency hopping mode of UL mandate.In case determine, WTRU just in specifying component carrier to UL mandate decode.

The UL that is used for each UL component carrier or is used for each UL mixed automatic repeat request (HARQ) entity authorizes and can and be mapped to corresponding DL component carrier by absolute coding.In up link, used in the situation of spatial reuse, can be by a multiplexing code word of the HARQ entity control enterprising row space of at one time a plurality of-frequency resource.Replacedly, the UL that is used for a plurality of UL component carriers (or UL HARQ entity) authorizes and also can be encoded and be mapped to single DL component carrier together.Replacedly, the described UL that is encoded together authorizes and can be distributed on a plurality of DL component carriers.

Disclose a kind of method in another embodiment, this method is used for will being used for all UL component carriers under asymmetrical situation uplink grant maps to a DL component carrier.This UL authorizes need carry the control information that is used for one group of UL component carrier.For the fixedly mapping between uplink scheduling grant and the corresponding up link component carrier, this mapping is by notifying with signal specific to the signaling of WTRU or specific to the higher level signaling of sub-district.When the signaling used specific to WTRU, then need be specific to the parameter of WTRU and the mapping between the UL component carrier index.Also may need to use the mapping of having adopted WTRU ID or similar information to the UL component carrier.When for each uplink grant of WTRU a up link component carrier being arranged all, then uplink grant does not need to comprise the index of up link component carrier.When a uplink grant on a plurality of component carriers during Resources allocation, the resource allocation field in the uplink grant then can comprise up link component carrier index or cross over the expansion RB index of a plurality of component carriers.When using uplink scheduling grant and the dynamic mapping between the up link component carrier accordingly, can be with signalisation up link component carrier index information in uplink scheduling grant.Also may be to authorizing the UL component carrier that is associated to use the bitmap mapping with UL.Can also use other mapping methods.

A plurality of UL scheduling authorization component combination are that a polymerization UL authorizes, and each component mandate is corresponding to an independent UL component carrier.But, can authorize at the UL during polymerization UL authorizes and share public information (comprising UE ID) (only once) between the component, with the saving signaling expense with signalisation.

Uplink grant is used for all or the part component carrier.When group's discrete Fourier transform expansion OFDM (DFT-S-OFDMA), a N single-carrier frequency division multiple access (SC-FDMA) or mix group DFT-S-OFDMA and N SC-FDMA is used as multiple access when machine-processed, uplink grant can be on a plurality of component carriers Resources allocation.For example, the component carrier that uses single inverse discrete Fourier transform fast Fourier transform (DFT-IFFT) to combine in SC-FDMA can have a mandate.

Being used for that down link control information (DCI) form of UL resource authorization is considered as one with the polymerization UL bandwidth (BW) of component carrier has in conjunction with the component carrier of back size and (for example expands, have a UL and authorize if the component carrier of two 5MHz is combined into, then this DCI form is corresponding to the component carrier of a 10MHz, if wherein the size of DCI form is identical with the UL component carrier that has only single 10MHz).Can infer putting in order of component carrier and Resource Block (RB) in this polymerization from BCH, WTRU or from carrier frequency specific to the signaling of sub-district with signalisation.For the situation of polymerization BW greater than 20MHz, the expansion of DCI form is corresponding to this polymerization BW.For example, if this polymerization is 20+10MHz, then the DCI form will be corresponding to single 30MHz bandwidth.

Be used for DCI form to the UL resource authorization and comprise one group of public field and one group (or specific to component carrier group) field specific to component carrier.Common Control Channel specific to group may need second Cyclic Redundancy Check.Below all or part of parameter can be shared for all component carriers: modulation and code set (MCS), precoding, number of plies amount, number of codewords, frequency hopping, distributed virtual resource block (DVRB).The RB of each component carrier distributes can be different.Replacedly, all parameters all are shared (for example, resource allocation are videoed or mirror image in all or part component carrier).

Can dispose the down link component carrier that all up link component carriers are mapped to by the higher level signaling.

Disclose a kind of method in another embodiment, this method is used for uplink grant is mapped to (may be different) predetermined component carrier.Mapping between this UL and the DL component carrier is by by specific to the signaling of WTRU or by determining with the standard (not needing extra signaling) of signalisation specific to the higher level signaling of sub-district and fixing.

If a plurality of up link component carriers are mapped to a down link component carrier, then UL authorizes the control information that need carry UL component carrier index.Disclosed herein being used for maps to the uplink grant of each UL component carrier a DL component carrier and do not consider that the method for UL/DL asymmetry also is applicable to present embodiment.

Have in the situation of physical down link channel (PDCCH) in all or part down link component carrier, WTRU need check these carrier waves are to learn whether there is the PDCCH with different frequency.The first down link component carrier is the carrier wave that WTRU can preempt at first.WTRU can only read this first down link component carrier, and reads other component carrier when using carrier wave designator or higher level signaling to indicate.For example, when transmitting data in e Node B request WTRU is mapping to up link component carrier on the down link component carrier of non-described first component carrier, uplink grant will be carried in this down link component carrier.Two execution modes are disclosed in order to this situation to be described.In one embodiment, a default up link component carrier and a down link component carrier that is associated are arranged, WTRU can monitor this down link component carrier always, and this carrier wave may be that first component carrier also may be other carrier waves.In another embodiment, also used the DRX process that is used for the down link component carrier disclosed herein in this case, promptly PDCCH also carries uplink grant, and uses identical DRX process.

The a plurality of UL mandates that are used for a WTRU are transmitted simultaneously at the DL component carrier that single (or a plurality of) have a plurality of PDCCH.This WTRU has a plurality of WTRU ID, maps to which UL component carrier to distinguish which UL mandate.This mapping between WTRU ID and component carrier is determined and is notified with signal by higher level by network.Some WTRU ID can be corresponding to a plurality of UL component carriers, and authorization method disclosed herein can be used for explaining and authorizes.

Below disclosed illustrative methods be discontinuous reception (DRX) operation that is used for the LTE-A carrier aggregation.

In one embodiment, WTRU is configured to one or more but be not work in all component carriers (that is, WTRU has up link or downlink transmission).Other component carrier free time, and WTRU does not attempt detecting any control information on the DL component carrier.Can send independent PDCCH for each component carrier.If WTRU is scheduled on other component carriers, then this WTRU is notified on its current component carrier of working by L1 or L2/L3 signaling.After receiving signaling, WTRU attempts detecting PDCCH on other component carriers.Receiving signaling (when WTRU is scheduled) and can be scheduled on other carrier waves in the time of transmitting between the PDCCH on other carrier waves.By this mechanism, only on a movable component carrier, for example on first component carrier, use DRX.

All has PDCCH and each carrier wave of each PDCCH all has in the independent situation of PDSCH at each component carrier, can use DRX to each component carrier, thereby, come to reduce more neatly the power consumption of WTRU by reducing the ON duration of comparing the component carrier that does not often use with ON (unlatching) duration of using maximum component carriers.Current DRX process did not allow for zero ON duration, and this is because do meaningless in single-carrier system like this.For the multiple component carriers system, can allow ON duration vanishing, utilize DRX power to reduce more fully by the one-component carrier wave.Therefore, the parameter area of DRX can comprise zero ON duration or unlimited DRX dormancy time.The DRX process of another component carrier can be set via the communication on the one-component carrier wave, and so just can notify WTRU to begin to monitor once more before is the component carrier of zero ON duration.For example, can in component carrier A, carry radio resource control (RRC) signaling to start the DRX process on the component carrier B.

PDCCH in the reception one-component carrier wave may influence the DRX state (behavior) on other component carriers.During the ON duration of the DRX circulation in carrier wave A, WTRU can obtain PDCCH, and the base station has prepared a plurality of component carriers are started high speed data transfer simultaneously, but the circulation of the DRX on other component carriers is long or was zero ON duration.Can make WTRU change the state of DRX on other component carriers at reception PDCCH on the component carrier A.For example, N subframe under WTRU monitors in some other (or all) peculiar component carriers.In another example, WTRU turns back to the different DRX circulations with higher ON duration, and can continue the scheduled time.WTRU can also reach the scheduled time for the predetermined way that PDCCH monitors component carrier.

Replacedly, can in whole polymerization or its subclass, define 2-D DRX mode (pattern).Different with every carrier wave DRX process, can in all component carriers that WTRU monitored, define a multicarrier DRX mode in the position by duration and ON duration.

In order to guarantee the downward compatibility with LTE version 8, all component carriers all are configured to support the WTRU with version 8 compatibilities.Each component carrier disclosed being configured that can Click here.In one embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH carry out multiplexing in the mode of code division multiplexing (CDM).Like this, can expand (or covering) sign indicating number based on WTRU ID, radio net temporary identifier (RNTI) derivation just.

Illustrative methods disclosed herein is used to realize the compatibility between LTE version and the LTE-A.In one embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH are multiplexing in the mode of frequency division multiplexing (FDM).Replacedly, the LTE-A network can be some resource allocation parts of LTE-A WTRU reserved bandwidth.

In another embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH are multiplexing in the mode of Time Division Multiplexing, and OFDM symbol that thus can be different transmits LTE-A PDCCH.

In another embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH are multiplexing in the mode of TDM, transmit LTE-A PDCCH with TTI thus, and for example, some subframes are LTE, and some are LTE-A.LTE WTRU can use DRX to manage separation between these two types, so that can not attempt LTE-A PDCCH is decoded.

In another embodiment, in each carrier wave, version 8PDCCH and LTE-A PDCCH are carried out multiplexing in the mode of mixing FDM/TDM, transmit LTE-A PDCCH with different resource element (RE) thus.

Following discloses be about the signaling and the illustrative embodiments of catching.What Fig. 3 represented is the dissimilar component carrier that can use in the exemplary embodiment, and open herein only be illustrative purpose.

Usually, in first illustrative embodiments, have only a LTE-A component carrier to carry system information, and this component carrier is called as first or the grappling component carrier specific to LTE.Term first or grappling component carrier can exchange to make and be used for representing identical content.By configuration, specified anchor carrier can provide the system information at specific cell, synchronous and paging.Non-anchor carrier can not have the broadcast channel specific to LTE-A, but can have synchronizing channel.Remaining LTE-A component carrier (non-anchor carrier) can not carry the LTE-A system information.Except that following two kinds of situations, non-grappling component carrier can not have synchronizing channel, and WTRU just detects less than this non-grappling component carrier like this.In first kind of exception, if non-grappling LTE-A component carrier is supported version 8WTRU, then this non-grappling LTE-A component carrier has version 8 synchronizing channels and version 8 broadcast channels.This represents with type 2 in Fig. 3.In second kind of exception, if non-grappling version 8 component carriers are not supported the LTE-A function, but have some system informations specific to LTE-A, then these non-grappling version 8 component carriers have version 8 synchronizing channels and version 8 broadcast channels.This represents with type 6 in Fig. 3.

Second example embodiment can have a plurality of anchor carrier in a LTE-A system.Except that the grappling component carrier, version 8 carrier waves can also be arranged.These version 8 carrier waves can be " version 8 component carriers that do not have the LTE-A function ", shown in the type among Fig. 35 and 6, or the backwards-compatible LTE-A component carrier of support version 8 functions, shown in the Class1 among Fig. 3 and 2.Type 5 and type 6 component carriers do not support the LTE-A function, for example more the multiple-input and multiple-output of evolution (MIMO) technology, collaboration communication, specific to control channel of LTE-A etc.Type 6 component carriers can for example transmit some additional informations on the broadcast channel, and described information is transparent for version 8WTRU.The LTE-A component carrier that should be appreciated that backwards-compatible version 8 is supported version 8 and LTE-A function simultaneously.

And, also may there be the LTE-A component carrier of non-return compatible version 8, shown in the type 3 and 4 of Fig. 3, and some subcarriers.Type 3 and 4 component carriers can not be backwards-compatible, and can not be used by version 8WTRU.Subcarrier can not can not be found by LTE-A WTRU by version 8WTRU, and can be configured to be used for additional bandwidth by the base station.The LTE-A component carrier of the non-grappling shown in the type 4, non-return compatible version 8 can not be detected by WTRU among Fig. 3.

Version 8 carrier waves all use identical synchronizing channel and technology with the LTE-A carrier wave.This just means that WTRU can not distinguish this carrier wave of two types by using synchronizing channel.The grappling component carrier can be the also can right and wrong backwards-compatible of backwards-compatible version 8.

Usually, when WTRU after synchronous phase detects in these carrier waves one, need to obtain system information specific to LTE-A.This information only transmits on the broadcast channel of anchor carrier.Therefore, WTRU need detect anchor carrier and read system information on this carrier wave.Following discloses be the anchor carrier that is used to solve this mechanism and process, by this anchor carrier, WTRU can be locked in anchor carrier; Determine whether carrier wave is anchor carrier; Receive system information and the definite type that are transmitted by the entrained information of anchor carrier specific to LTE-A.

To openly have now single grappling component carrier the LTE-A signaling and catch.This illustrative embodiments only has an anchor carrier in the LTE-A system, and has only this anchor carrier can carry system information specific to LTE-A.

This illustrative embodiments has two stages.Phase I relates to WTRU and is locked in anchor carrier.Second stage relates to specific to the transmission of the system information of LTE-A.To describe this two aspect below in detail.

At phase I or synchronous phase, because WTRU scans up to successfully finding synchronizing channel, so LTE-A WTRU can be locked in any one carrier wave frequency band.LTE-A WTRU may be locked in following one or more carrier wave: component carrier, for example Class1,2,5 or 6 with version 8 compatibility; And grappling LTE-A component carrier, for example Class1 of backwards-compatible version 8 and the type 3 of non-return compatible version 8.

Can there be two parts the described phase I.In case first just determines carrier type after finding component carrier about WTRU.WTRU determines that carrier wave is an anchor carrier.Second portion relates to WTRU and whether knows that this component carrier is not an anchor carrier.Second portion provides the mechanism that is used to find the method for anchor carrier and is used for WTRU is guided into anchor carrier.

For the type of knowing component carrier, several illustrative methods are provided.In first kind of illustrative methods, in BCH, transmit the information of indication component carrier type.WTRU reads BCH MIB, SIB or MIB and SIB.WTRU decodes, obtains information to BCH and knows the type of component carrier.In the component carrier of the pattern that is configured to support version 8WTRU, anchor carrier information can be included among the MIB or SIB of expansion, so just can not read by version 8WTRU.

Especially, can be by definition and MIB or the next indication of in BCH, carrying of the similar novel entities of SIB to carrier type.WTRU knows the position of this entity on time/frequency, and reads this information on described position.This novel entities can with version 8BCH entity in frequency and/or multiplexing on the time.Can also use new radio net temporary identifier (RNTI) to come described novel entities is encoded.Described information can not produce excessive expense, and only as the indication to carrier type.For example, described novel entities can be carried in middle x the radio blocks (RB) of 1.25MHz bandwidth, and on OFDM (OFDM) symbol adjacent or on the OFDM with any other set time (OFDM) symbol with respect to PBCH, Physical Synchronisation Channel P-SCH etc., wherein x is less than 6 with Physical Broadcast Channel (PBCH).This indication can also be coded in the new version 8SIB type or as the expansion of existing SIB.

WTRU decodes to the novel entities that is carried on regular time/frequency location.After to the novel entities decoding, WTRU can be known the type of component carrier.WTRU can be by decoding to obtain this information to the expansion of the version 8SIB of redetermination or one or some existing version 8SIB.

According to another kind of method, carry out random access procedure for one in the uplink carrier that WTRU is linked to uplink carrier or with detected down link component carrier, and obtain radio resource control (RRC) and connect.Afterwards, if WTRU supports carrier aggregation, then can receive information by the higher level signaling about anchor carrier.

Especially, can be to WTRU transmission indication and other relevant informations after RRC connects to carrier type.LTE-A WTRU is locked in carrier wave and obtains RRC and connects.If this carrier wave or anchor carrier then can transmit all LTE-A system informations to WTRU by the RRC signaling.If this carrier wave is not an anchor carrier, then also can transmit the position of anchor carrier to WTRU by the RRC signaling.In this case, WTRU is known the position of component carrier type and possibility anchor carrier by using the higher level signaling.Replacedly, will transmit all LTE-A system informations from the RRC signaling of non-anchor carrier, WTRU will be known anchor carrier from this information.Be noted that in this method based on RRC, anchor carrier can be specific to the sub-district also can be specific to WTRU.

WTRU can also be known carrier type during random access procedure.For example, can in message 2 or 4, transmit carrier type.WTRU decodes to this particular message and knows carrier type, perhaps directly in this message anchor carrier is indicated.Be noted that in this method based on Random Access Channel (RACH), anchor carrier can be specific to the sub-district also can be specific to WTRU.

In another method, can use some bits in the idle bit string to indicate the type of component carrier.Version 8WTRU can ignore this Bit String, so these additional informations that are inserted among the MIB are transparent to these WTRU.

For example, can use individual bit to indicate whether component carrier is anchor carrier.The structure of having represented Master Information Block in the version 8 in the table 1 below.MIB is made up of downlink bandwidth, the automatic repetitive requests indicating channel of physical mixed (PHICH) configuration and System Frame Number.In addition, also be reserved with the idle bit string.Simultaneously, in the downlink bandwidth district, also have two idle code-points.

Table 1: Master Information Block

Can use the residue idle bit to transmit some system informations specific to LTE-A.For example, can use the residue idle bit to inform with signal how the quantity, up link component carrier of down link component carrier and they link.

Where the residue idle bit locatees anchor carrier if can also refer to be shown in.If the lazy weight of bit is with the absolute position of indication anchor carrier, then can indicate RB in the physical down link sharing channel that includes the anchor carrier positional information (PDSCH) to distribute (that is, time/frequency resource address) with these bits.

After completing successfully synchronizing process, WTRU decodes to MIB.If this WTRU is version 8WTRU, then this WTRU ignores the idle bit among the MIB.If this WTRU is LTE-A WTRU, then this WTRU is with some are not interpreted as the bit of component carrier type among the MIB by the employed bit of version 8WTRU (by aforementioned definitions).If this carrier wave is an anchor carrier, then WTRU knows specific to the position of the system information of LTE-A, and reads this system information specific to LTE-A.If this carrier wave is not an anchor carrier, then WTRU obtains the information of the position of indication anchor carrier.WTRU can obtain this information by some or all of residue idle bits is decoded.Replacedly, WTRU can receive Resource Block (RB) distribution of the PDSCH that comprises the anchor carrier positional information.

Another kind method uses new Cyclic Redundancy Check mask code sequence to shelter the CRC of PBCH among the LTE-A, and LTE-A WTRU will use this new mask code sequence that BCH is decoded.If the backwards-compatible version 8 of carrier wave right and wrong and be anchor carrier (that is, type 3), then because new BCH (also can be synchronizing channel) can only be detected by LTE-A WTRU, so this indication is an implicit expression.In this case, LTE-A WTRU must know that this BCH (or synchronizing channel) is specific to LTE-A.This can realize by for example using new Cyclic Redundancy Check mask code sequence that BCH is sheltered.LTE-A uses this new CRC mask code sequence that BCH is decoded.

In another illustrative methods, if the LTE-A carrier wave of the backwards-compatible version 8 of anchor carrier right and wrong (type 3), then should use specific CRC (for example ANCHOR_CRC) to come LTE-A Physical Broadcast Channel (PBCH) is sheltered, and anchor carrier has been indicated in the successful decoding of this PBCH.In this example, WTRU carries out synchronizing process and PBCH is decoded, to obtain the information of carrier type.When PBCH was decoded, WTRU used corresponding C RC that PBCH is carried out demasking.If this WTRU is LTE-A WTRU, then this WTRU will use specific CRC (for example ANCHOR_CRC) and conventional CRC (in LTE version 8) to come PBCH is carried out demasking.If use the CRC of specific CRC to detect successfully, then indicated anchor carrier.If use the CRC of specific CRC to detect failure, and use the CRC of conventional CRC to detect successfully, what indicated then that WTRU do not find anchor carrier and preemption is non-grappling component carrier.In this case, if the component carrier that WTRU preempted is the carrier wave (type 2) or type 6 carrier waves of backwards-compatible version 8, then WTRU can read PBCH, can receive SIB via the RRC signaling, and be directed to anchor carrier.And WTRU can also proceed synchronizing process and PBCH is decoded for next carrier wave.Along with WTRU is that carrier wave is carried out synchronizing process and PBCH is decoded, this process is restarted.

If WTRU is version 8WTRU, then it only uses conventional CRC that PBCH is carried out demasking.If PBCH is to use specific CRC to shelter, then WTRU can not detect by the CRC to this carrier wave.Thus, WTRU just can not insert the LTE-A special carrier.

The method of following discloses is used for WTRU is directed to anchor carrier.After WTRU knows that component carrier is not anchor carrier, WTRU is directed to anchor carrier.By higher level signaling after the signaling among the BCH, the RRC connection foundation or the signaling during the access process at random WTRU is directed to anchor carrier.

In illustrative methods, can use the RRC signaling that WTRU is directed to anchor carrier.After WTRU obtained the RRC connection, WTRU can be known the position of anchor carrier by the higher level signaling.After this information of acquisition, WTRU is transferred to anchor carrier and attempts the BCH on the anchor carrier is decoded, with receiving system information.

WTRU can also be known the position of anchor carrier during random access procedure.For example, can in message 4, transmit the position of anchor carrier, and this message is decoded and know the position of anchor carrier by WTRU.

Can use the novel entities that comprises the component carrier type information.This entity can also carry the position of anchor carrier.WTRU can use process same as described above.Can also make this novel entities only comprise the positional information of anchor carrier.WTRU is known the position of anchor carrier by this entity is decoded, and then is transferred to this anchor carrier.If have only an anchor carrier, then this entity not necessarily transmits on anchor carrier.

According to method selected, can only on non-anchor carrier, use this to be directed to the mechanism of anchor carrier.For example, if carrier type and anchor carrier position be encoded respectively and in two different entities, transmit, then may need only on non-anchor carrier, to transmit positional information.

WTRU can also proceed Cell searching, till detecting anchor carrier.

This directional commands can be coded among the version 8SIB of newtype or in the expansion of existing SIB.LTE-A WTRU knows this expansion SIB, and knows the position of anchor carrier by this SIB is decoded, or by using the idle bit string that directional commands is coded among the version 8MIB.

Can transmit position or other possible information about anchor carrier of anchor carrier in subframe, this information is thought blank by LTE-A WTRU.Like this, behind the position of having known the grappling component carrier, WTRU will be transferred to this carrier wave.

Below disclosed illustrative methods be used for specific to the transmission of the system information of LTE-A.After WTRU finds anchor carrier, need on this anchor carrier, transmit new system information.The illustrative methods that is used for this transmission depends on that whether this carrier wave is backwards-compatible version 8.

Under the situation of version 8 compatible anchor carrier, version 8BCH remains unchanged.Fresh information can transmit in the expansion of new MIB or SIB or existing MIB or SIB.The following discloses several be used to the define new MIB/SIB or the methods of its expansion.

For LTE-A, first broadcast channel can also can expanded on time domain on the frequency domain.In the example of frequency domain expansion, can use N subcarrier and 72 current subcarriers.This newly assigned subcarrier can be adjacent with current center subcarrier, also can the off center subcarrier with a fixed qty subcarrier.

In time domain expansion example, can on the frequency identical, transmit BCH with version 8 broadcast channels, still, should use than the more OFDM symbol of 4 symbols of the current MIB of being used for and than the more subframes that SI window is used for other SIB and transmit this BCH.If use this adding/expansion, then WTRU can know the time of novel entities.WTRU reads new system information and it is decoded from this fixed position, to receive the system information specific to LTE-A.

Specific to the system information of LTE-A can be the information element (IE) among the existing version 8SIB or the expansion of system information (SI).The different ASNI form of version 8 and LTE-A makes LTE-A WTRU RRC can receive related content.For example, LTE-A WTRU RRC can be received as the carrier wave specific uplink grappling information IE among conventional version 8 SIB-2 criticalExtension-Rel10 specific to the LTE-A (feature of critical expansion-Rel10), and therefore up link being inserted this information of response, this criticalExtension-Rel10 then is transparent to version 8WTRU.And, can be the SIB expansion specific to the system information of LTE-A, this SIB expansion only will enter independent SI and the SI window at LTE-A.For example, all operating parameters specific to LTE-A all can be placed among one or more independent SIB in the sub-district, just SIB-12, SIB-13, wherein the SIB that inserts at LTE-A cell configuration and up link is the same with conventional version 8SIB-2 has the short period, and remaining LTE-A SIB then has longer cycle.The LTE-A WTRU that inserts the carrier wave of version 8 compatibilities reads MIB, (it will know the LTE-A cell characteristics), read SIB-1 then finding whole SIB scheduling, and based on being used for of in SIB-1, finding schedule information that the LTE-A system information catches read SIB, be SIB-12 and SIB-13 specific to LTE-A.

If component carrier has carried version 8 and LTE-A system information, then LTE-A WTRU can use the physical downlink control channel (PDCCH) with existing system information wireless electric network temporary identifier (SI-RNTI) of newtype, or replacedly, LTE-A WTRU can use the identical PDCCH with different SIA-RNTI, and this SIA-RNTI is the new RNTI that is used for by the LTE-A of relevant LTE-A WTRU establishment and use.

If use existing SI-RNTI to come to carry system information, then can use new particular downlink control information (DCI) form for SI-RNTI PDCCH as LTE-A.Current DCI form 1C and 1A are the SI-RNTI that is used for version 8.Replacedly, can use existing DCI form, but be to use different code rates/control channel element (CCE) polymer grade etc.

Can change the RNTI value mapping among the LTE-A, to adapt to use to SIA-RNTI.An example is provided in table 2 below.

Table 2:RNTI value

Can use existing version 8 dispatching methods the system information that is used for version 8 and LTE-A to be dispatched together in identical time domain and frequency domain.This just relates to situation disclosed herein, wherein use with version 8 in identical system information (SI) length of window come SIB-12 and SIB-13 are dispatched.At the LTE-A SIB that adds to whole SI broadcasting staggered (stagger) SI has been exceeded under the situation of minimum 160ms periodic regime, then can use following method.

In a kind of illustrative methods, frequency resource block (RB) is added in SI broadcasting in compatible carrier wave, that thereby the length of SI window can reduce to is minimum (for example 10), and therefore for all T, version 8 and the staggered of LTE-A SI at specific SFN%T=0 will can not surpass the minimum SI cycle, wherein T is the cycle, promptly, NSIB x W＜=(the shortest SI cycle in the subframe, be generally 160), wherein NSIB is the sum (from SIB-2 upwards, version 8 and LTE-A) of SI, and W is the SI window in the subframe.

In another approach, can in scheduling rule, add vertical shift, SFN mould T=(OFFSET-A+FLOOR (x/10)) for example, wherein OFFSET-A is the vertical shift specific to LTE-A.Change according to this, the order of the LTE-A SI in version 8 schedule informations first LTE-A SI from the SIB-1 schedule information begins to calculate (rather than from first SI of version 8 order).If additional LTE-A SI is no more than 7, then this OFFSET-A can value be 18 (SI window＜=20 are got in supposition).

Replacedly, also can use above-mentioned two kinds of methods simultaneously, that is, but make the SI window less and only the LTE-A SI on the compatible carrier wave is offset.

MIB or SIB expansion can be carried possible LTE-A community configured information, for example the quantity of carrier wave and/or anchor carrier, down link and uplink carrier or anchor carrier be how to link with and frequency location (quantity of E-UTRAN absolute RF channel number (EARFCN)).For example carrier frequency can be labeled as 1,2 ..., N is to realize quick identification on the PDCCH that is used for up link and down link mandate.Uplink carrier that LTE-A WTRU can be used to this information to link or the up link on the anchor carrier insert.

WTRU also can use RRC to receive information about all carrier waves.

The time of the known new MIB/SIB of WTRU or its expansion.This can be by distributing regular time/frequency location to realize to some entities, for example MIB.This can also realize by notify the scheduling of these entities to WTRU, for example transmits this information in SIB 1.WTRU receives these entities by given time decoding.WTRU can use specific to the RNTI of LTE-A or with version 8 in the identical RNTI that uses come CRC is carried out demasking.After to these entity decodings, WTRU just can obtain the system information specific to LTE-A.

Can by existing P BCH, new MIB or new SIB indicate information specific to LTE-A (quantity of transmit antenna for example, for example eight of as many as or more than).Further PBCH is revised as the feature (for example, high-order mimo) that to support specific to LTE-A.In following table 3, represented PBCH:

Table 3: the CRC mask that is used for PBCH

CRC4 is the PBCH CRC mask that is used for when the transmit antenna port number of e Node B equals eight.The quantity of knowing transmit antenna can help PDCCH and physical down link sharing channel (PDSCH) downlink sharied signal channel (DL-SCH) are carried out channel estimating and demodulation, to be used for system information (SIB) and data demodulates.Described below is example about this execution mode.

In an example, if the main carrier anchor carrier (Class1) of backwards-compatible version 8, and only used new SIB to transmit system information specific to LTE-A, then first three CRC mask is used for PBCH, and is as shown in table 3.Can indicate about reaching the information of four transmit antenna quantity.Can in new SIB, indicate about reaching the information of eight transmit antenna quantity.

In another example, if the anchor carrier of backwards-compatible version 8 (Class1), and use new MIB to transmit system information, then whole four the CRC masks shown in the table 3 all are used for new PBCH specific to LTE-A.Can indicate about reaching the information of eight transmit antenna quantity.

In another example, if the anchor carrier of LTE-A (type 3) only then is used for PBCH with whole four CRC masks.Can indicate about reaching the information of eight transmit antenna quantity.

Method described below is used to handle the LTE-A anchor carrier of non-return compatible version 8.In this case, can use brand-new broadcast channel with new MIB and SIB.LTE-A obtains the system information specific to LTE-A by these new MIB and SIB are decoded.This carrier wave can also comprise multicarrier system information, new synchronizing signal, paging etc.Replacedly, for the anchor carrier of LTE-A only, this LTE-A MIB and SIB can according to current version 8MIB and SIB broadcasting in the identical mode used come frequency of utilization and time resource.

In version 8 compatibilities and version 8 non-compatible anchor carrier, LTE-A WTRU can respond the system information that is received, and for example uses time and the preamble selected according to the random access parameter that is received to carry out the uplink random access on the specific uplink carrier wave.

Now disclosed is to have single grappling component carrier and a plurality of second execution mode that can detected LTE-A component carrier.

In first illustrative embodiments, unique can detected LTE-A component carrier be anchor carrier.But, also have a plurality of LTE-A component carriers and have synchronizing channel but its and on broadcast channel, do not carry system information.This may use for the purpose of load balancing.In this case, WTRU need know carrier type and to the orientation mechanism of grappling component carrier.

If detected carrier wave is backwards-compatible version 8, then can use the method that is used for first illustrative embodiments disclosed herein.

If the LTE-A carrier wave of the backwards-compatible version 8 of detected component carrier right and wrong then can send the information that comprises component carrier type and anchor carrier position on a small quantity.In this case, note, therefore not need to transmit version 8 broadcast channels because carrier wave is not backwards-compatible.

By definition and MIB or the similar novel entities of SIB, can in broadcast channel, carry indication to carrier type.WTRU knows the position of this entity in time/frequency, and reads information on this position.Can also use new RNTI to come this information is encoded.This information can not produce big expense and only be the indication of carrier type, and can carry the position of anchor carrier.For example, novel entities can be carried in middle x (x is equal to or less than 6) RB of 1.25MHz bandwidth, and carries on the OFDM symbol identical with transmitting Rel-8 MIB.

WTRU decodes to the novel entities that is carried on set time/frequency location.After to the novel entities decoding, WTRU is known the type of component carrier, and may know the position of anchor carrier.

Now disclosed is the 3rd execution mode that a plurality of grappling component carriers are arranged.In the LTE-A sub-district of carrier aggregation, can there be a plurality of LTE-A component carriers to carry system information.In this case, these component carriers can carry identical system information, perhaps may carry different system informations.The RACH parameter that is used for each anchor carrier can be different.These possibilities are disclosed now.

In an illustrative embodiments, all anchor carrier are carried identical system information.In this case, can on each anchor carrier, transmit information about whole system.For example, random access parameter that links, is used for the down link component carrier between the quantity of down link and up link component carrier, down link component carrier and the up link component carrier etc.WTRU obtains system information specific to LTE-A by reading broadcast channel in any one component carrier.Be noted that all DL component carriers can all be backwards-compatible versions 8.In this case, can use the disclosed method that is used for first illustrative embodiments.

Replacedly, WTRU detected DL component carrier in synchronized process can be thought interim anchor carrier by this WTRU.In this case, WTRU obtains random access parameter from this interim anchor carrier, comprises that WTRU will be used to obtain the interim UL carrier wave of RACH transmission.Can use interim carrier wave specific ID (RNTI or scrambler sequence) to DL and the interim carrier wave of UL respectively.According to this method,, therefore can in many anchor carrier sub-district, realize load balancing because the WTRU in the sub-district can expand/preempt different anchor carrier.

In the exemplary embodiment, anchor carrier is carried different system informations.Can the part difference by the system information that anchor carrier is entrained.For example, if two anchor carrier are arranged, be expressed as grappling X and grappling Y, then entrained system information can comprise about the information of the up link component carrier that is linked with this anchor carrier and might comprise information about any other the down link component carrier that is linked with same up link component carrier on grappling X.In another example, only can be only on grappling X, transmit and corresponding random access parameter of grappling X and the up link component carrier that is linked.If also have the additional downlink link component carrier that is linked with same up link component carrier, then also can on grappling X, transmit the random access parameter that is used for these carrier waves.Be noted that the down link component carrier that is linked with same up link component carrier can have the different random access parameter, so Node B can be distinguished WTRU and monitoring which down link component carrier.

In this case, WTRU comes acquisition unit subsystem information by reading a broadcast channel on the anchor carrier.All the other system informations can obtain by the higher level signaling after RRC connects foundation.

Should be noted that WTRU has only anchor carrier just to transmit the needed system information that comprises random access parameter according to hypothesis to start access attempts at random to the up link component carrier that is linked with the grappling component carrier.In other method, disclosed as first execution mode, WTRU can start access attempts at random to the non-grappling component carrier of version 8, and redirects to the grappling component carrier by RRC signaling or random accessing message afterwards.

Disclosed method is to be used for WTRU is redirected to the grappling component carrier from version 8 carrier waves now.For WTRU is redirected to the anchor carrier one from the non-anchor carrier of version 8, can use the method for disclosed phase I about first execution mode.It is noted that when having a plurality of anchor carrier, WTRU can be redirected to the anchor carrier any one from version 8 carrier waves.For this reason, can on version 8 carrier waves, transmit the positional information of all anchor carrier, and by one in the WTRU selection anchor carrier.Can be based on specific criteria, for example preferred carrier frequency, best downlink link quality (for example Reference Signal Received Power (RSRP)) are selected, or select at random.And position that can be by transmitting single anchor carrier on version 8 carrier waves redirects to the anchor carrier any one with WTRU from version 8 carrier waves.

Below disclosed method be used for WTRU is redirected to another anchor carrier from a grappling component carrier.WTRU can also be directed to another grappling component carrier from a grappling component carrier.This can be used for for example realizing the load balancing in many anchor carrier LTE-A sub-district.It is noted that also the LTE-A grappling can be in response to all WTRU idle mode operations.Open now illustrative methods about this content.

According to illustrative methods, network can use the part that redirects or can be used as Non-Access Stratum (NAS) message of some types in the random access procedure message 4 that WTRU is directed to another anchor carrier from current component carrier.In this case, WTRU decodes to message, and if exist and to redirect order, then WTRU moves to grappling component carrier indicated in this order.In this order, WTRU can receive the centre frequency number of new anchor carrier, with the frequency shift (FS) of current anchor carrier or be used to locate some other guides of new anchor carrier.

According to another illustrative methods, when WTRU when the pattern that is connected becomes idle condition, can receive and clearly redirect order by the RRC message that connects when discharging.In this order, WTRU can receive the centre frequency number of new anchor carrier, with the frequency shift (FS) of current anchor carrier or be used to locate some other guides of new anchor carrier.

According to another illustrative methods, a MIB/SIB can disclose the target carrier frequency of cell load factor and one or more grappling component carriers.If the on-load factor of current anchor carrier is in (or quality of connection is under threshold value) on the certain threshold level, then WTRU can be chosen in the indicated target grappling component carrier of system information one automatically, and moves to this carrier wave.This process is used for idle pulley.

Also can in connection mode, carry out from a grappling component carrier redirecting to another grappling component carrier.The disclosed method that is used for idle pulley is suitable for too.

Following discloses be can be on different anchor carrier different information types.Each anchor carrier can be carried the information about the up link component carrier that is linked.And each anchor carrier can be carried the information about other down link component carriers that link to the up link component carrier identical with this anchor carrier, and each anchor carrier can be carried different random access parameters.When a plurality of anchor carrier link to the same uplink component carrier, also can use identical random access parameter.

Each anchor carrier can have different SIB, particularly comprises the SIB2 about radio resource configuration, for example MIMO configuration, uplink control channel configuration etc.This SIB also comprises random access parameter.Be noted that in LTE-A, also can use another SIB to carry this category information.

Be used for the situation of WTRU idle pulley paging in the LTE-A anchor carrier, anchor carrier paging cycle or DRX cycle length each other can be configured to difference.Can be that the different relevant parameters of other idle pulley pagings is " quantity that is used for the subframe appearance of paging in paging frame ", i.e. current Ns parameter in the idle pulley paging and paging subframe mode definition list.

WTRU is known these parameters and system information by reading in the broadcast channel that transmits on the anchor carrier.Although a plurality of grappling component carriers can be arranged in the LTE-A sub-district, WTRU may only need to lock one of them to be used for system information in preset time.

The method of following discloses is used to carry out system information modification.When system information (SI) when changing, WTRU can obtain notice by two kinds of illustrative methods.In a kind of illustrative methods, WTRU can check RNTI specific among the PDCCH, and this RNTI is used for transfer system and revises order, for example SI-CHG-RNTI.This order can periodically transmit, and can be made up of cue mark.Suppose that SI changes, this order can also be which specific SIB has been modified by using bitmap to indicate.WTRU periodically seeks the PDCCH order with given RNTI.After these being ordered successfully decoding, if the SI variation has taken place, then WTRU is that SIB reads amended SIB at preset time/frequency location.In another approach, WTRU can detect beep-page message to check the variation of certain indicators.

For system information modification, can use following method.In illustrative methods, when paging was provided, the paging cycle under the connection mode can be all identical to all component carriers, perhaps at different component carriers and difference.

In another approach, when network wishes to change system information, paging WTRU on the grappling component carrier only.WTRU just only need monitor its paging cycle on the grappling component carrier like this.

In another approach, WTRU can select it to wish the anchor carrier of monitoring according to the paging cycle of suitable its DRX cycle.This monitoring can be carried out with the operating time that has covered the paging cycle of selected anchor carrier in the ON duration of WTRU DRX, thereby saved power.

In another approach, WTRU can come computing system to revise the cycle according to the grappling component carrier.This system can calculate according to SFN mould N in the cycle of revising, and wherein N can be the modification periodic coefficient in the frame that only receives on the grappling component carrier.

In another approach, in case WTRU has received paging, then this WTRU can begin to receive new system information from the modification cycle.During WTRU received this new system information, WTRU can stop to monitor other component carriers and only from grappling component carrier monitored data, and received SI by BCCH simultaneously.

In another approach, WTRU can also monitor the value mark of the SIB-1 on the grappling component carrier, like this its with regard to unnecessary in each paging cycle reading gating message all.

For in this disclosed method,, then can notify WTRU to need this WTRU to monitor which grappling component carrier and obtain system information variation and/or paging if there are a plurality of grappling component carriers.Replacedly, if all be synchronous for all anchor carrier of network, then WTRU can monitor all grappling component carriers for this information.

Embodiment

1, a kind of method of carrying out by wireless transmitter/receiver unit (WTRU) that is used to handle carrier aggregation, this method comprises that reception is used to identify the carrier aggregation information of at least one component carrier, and the one-component carrier wave in wherein said at least one component carrier carries the downlink control channel related with described WTRU.

2, according to embodiment 1 described method, this method also comprises the described downlink control channel of detection.

3, according to the described method of aforementioned arbitrary embodiment, this method also comprises the down link control information in the described downlink control channel is positioned.

4, according to the described method of aforementioned arbitrary embodiment, this method also comprises based on down link control information comes the receiving downlink transmission.

5,, wherein carrying the described carrier aggregation information of indication in the broadcast channel of the control information of sub-district according to the described method of aforementioned arbitrary embodiment.

6, according to the described method of aforementioned arbitrary embodiment, wherein said control information specific to the sub-district is carried as Master Information Block (MIB) or system information block (SIB).

Which 7,, wherein indicate about monitoring the carrier aggregation information of the component carrier in described at least one component carrier by in broadcast channel broadcasts, L2/3 signaling or the L1 signaling at least one according to the described method of aforementioned arbitrary embodiment.

8, according to the described method of aforementioned arbitrary embodiment, wherein said down link control information is used for indicating the down link data authorization message to be positioned at the down link control information that carries component carrier.

9, according to the described method of aforementioned arbitrary embodiment, wherein said control information is used for indicating the down link data authorization message to be positioned at the component carrier different with the down link control information that carries component carrier.

10, according to the described method of aforementioned arbitrary embodiment, wherein said control information is used for indicating the down link data authorization message to be positioned at a plurality of component carriers, and described a plurality of component carriers can comprise the down link control information that carries component carrier.

11, according to the described method of aforementioned arbitrary embodiment, wherein said downlink control channel is related with one group of a plurality of component carrier, and wherein said WTRU is configured to detect described downlink control channel and needn't searches for all a plurality of component carriers in described group.

12, according to the described method of aforementioned arbitrary embodiment, this method also comprise by use higher level signaling, L1 signaling or implicitly by described at least one transmit one-component carrier wave in the component carrier of downlink control channel and receive described downlink control channel and carried mapping between the component carrier of shared data channel.

13, according to the described method of aforementioned arbitrary embodiment, wherein said downlink control channel has carried the component carrier index.

14, according to the described method of aforementioned arbitrary embodiment, wherein said downlink control channel has the carrier wave indication field of the index that has carried component carrier.

15, according to the described method of aforementioned arbitrary embodiment, this method also comprises only uses discontinuous reception (DRX) on movable component carrier.

16, according to the described method of aforementioned arbitrary embodiment, this method also comprises for each component carrier all uses DRX, to reduce the unlatching duration of comparing obsolete component carrier with the unlatching duration of using maximum component carriers.

17,, wherein receiving described downlink control channel on first component carrier to impel the DRX state of described WTRU change on other component carriers according to the described method of aforementioned arbitrary embodiment.

18,, wherein on all component carriers or subclass, define 2-D DRX mode according to the described method of aforementioned arbitrary embodiment.

19, according to the described method of aforementioned arbitrary embodiment, wherein a plurality of component carriers use same asset.

20, according to the described method of aforementioned arbitrary embodiment, wherein said downlink control channel is used at least one group component carrier wave.

21, according to the described method of aforementioned arbitrary embodiment, this method also comprises and is received in the Physical Control Format Indicator Channel (PCFICH) that transmits in all component carriers, and do not consider the position of described downlink control channel.

22, according to the described method of aforementioned arbitrary embodiment, this method also is included in and detects described PCFICH in the component carrier, and described PCFICH is used for indication and has used what OFDM symbols at transfer of data.

23, according to the described method of aforementioned arbitrary embodiment, this method also comprises receiving uplink (UL) dispatch map information, and the uplink grant that wherein will be used for the up link component carrier maps to the down link component carrier and do not consider the asymmetry of uplink/downlink component carrier.

24, according to the described method of aforementioned arbitrary embodiment, this method comprises that also reception is used for the frequency hopping mode information of uplink grant, and described uplink grant is expanded on a plurality of down link component carriers.

25, according to the described method of aforementioned arbitrary embodiment, this method also comprises receiving uplink (UL) dispatch map information, and wherein uplink grant is encoded together and is mapped at least one down link component carrier and do not consider the asymmetry of uplink/downlink component carrier.

26, according to the described method of aforementioned arbitrary embodiment, this method also comprises receiving uplink (UL) dispatch map information, and the uplink grant that wherein will be used for one group of up link component carrier maps to the down link component carrier.

27, according to the described method of aforementioned arbitrary embodiment, wherein said down link control information comprises up link component carrier index.

28, according to the described method of aforementioned arbitrary embodiment, wherein said uplink grant is the polymerization corresponding to the uplink grant of independent up link component carrier.

29, according to the described method of aforementioned arbitrary embodiment, this method also comprises receiving uplink (UL) dispatch map information, and each uplink grant that wherein is used for the up link component carrier is mapped to different down link component carriers.

30, according to the described method of aforementioned arbitrary embodiment, this method comprises also which uplink carrier uses a plurality of WTRU ID to distinguish which uplink grant maps to.

31, a kind of method of being carried out by wireless transmitter/receiver unit (WTRU) that is used to handle carrier aggregation, this method comprises at least one component carrier of detection.

32, according to embodiment 31 described methods, this method also comprises and is locked to described at least one component carrier.

33, according to the described method of arbitrary embodiment among the previous embodiment 31-32, this method also comprises the type of determining described at least one component carrier.

34, according to the described method of arbitrary embodiment among the previous embodiment 31-33, it is under the situation of non-grappling component carrier that this method also is included in described at least one component carrier, at least one grappling component carrier is positioned, and wherein said at least one grappling component carrier has carried carrier aggregation information.

35, according to the described method of arbitrary embodiment among the previous embodiment 31-34, this method also comprises based on described carrier aggregation information comes the receiving downlink transmission.

36,, wherein in broadcast channel, transmit the type of described at least one component carrier according to the described method of arbitrary embodiment among the previous embodiment 31-35.

37, according to the described method of arbitrary embodiment among the previous embodiment 31-36, wherein in Master Information Block or system information block one in carry described at least one component carrier type.

38, according to the described method of arbitrary embodiment among the previous embodiment 31-37, wherein said definite type that the carrier aggregation information entity is decoded and known described at least one component carrier that also comprises.

39, according to the described method of arbitrary embodiment among the previous embodiment 31-38, this method also is included on the up link component carrier related with described at least one component carrier and carries out random access procedure.40, according to the described method of arbitrary embodiment among the previous embodiment 31-39, this method comprises that also obtaining radio resource control (RRC) connects.

41, according to the described method of arbitrary embodiment among the previous embodiment 31-40, it is under the situation of described grappling component carrier that this method also is included in described at least one component carrier, connects by described RRC to receive carrier aggregation information.

42, according to the described method of arbitrary embodiment among the previous embodiment 31-41, this method also is included on the up link component carrier related with described at least one component carrier and carries out random access procedure.

43, according to the described method of arbitrary embodiment among the previous embodiment 31-42, this method comprises that also obtaining radio resource control (RRC) connects.

44, according to the described method of arbitrary embodiment among the previous embodiment 31-43, it is under the situation of non-grappling component carrier that this method also is included in described at least one component carrier, receives the position of described grappling component carrier.

45, according to the described method of arbitrary embodiment among the previous embodiment 31-44, this method also is included on the up link component carrier related with described at least one component carrier and carries out random access procedure.

46, according to the described method of arbitrary embodiment among the previous embodiment 31-45, this method also comprises decodes to the predetermined message type, to obtain the information about described grappling component carrier.

47, according to the described method of arbitrary embodiment among the previous embodiment 31-46, wherein at least one idle bit has been indicated the type of described at least one component carrier.

48, according to the described method of arbitrary embodiment among the previous embodiment 31-47, wherein remain idle bit and carried carrier aggregation information.

49, according to the described method of arbitrary embodiment among the previous embodiment 31-48, wherein remain the position that idle bit has been indicated described grappling component carrier.

50, according to the described method of arbitrary embodiment among the previous embodiment 31-49, wherein said grappling is decoded to broadcast channel by the redundancy check of employing carrier aggregation particular cycle and is implicitly determined.

51, according to the described method of arbitrary embodiment among the previous embodiment 31-50, wherein the location also comprises using broadcast channel signaling, RRC signaling or inserting one in the process message at random described WTRU is directed to described anchor carrier.

52, according to the described method of arbitrary embodiment among the previous embodiment 31-51, wherein directional commands is coded among one among SIB or the MIB.

53,, wherein carrier aggregation information is carried in one in SIB, MIB or the information element (IE) according to the described method of arbitrary embodiment among the previous embodiment 31-52.

54, a kind of wireless transmitter/receiver unit (WTRU) that is used to handle carrier aggregation, this WTRU comprises receiver, this receiver is configured to receive the carrier aggregation information that is used to identify at least one component carrier on broadcast channel, and the one-component carrier wave in wherein said at least one component carrier has carried the downlink control channel related with described WTRU.

55, embodiment 54 described WTRU, this WTRU also comprises processor, this processor is configured to detect described downlink control channel according to described carrier aggregation information, and the down link control information in the described downlink control channel is positioned

56, a kind of this WTRU of wireless transmitter/receiver unit (WTRU) that is used to handle carrier aggregation comprises receiver.

57, embodiment 56 described WTRU, this WTRU also comprises processor.

58, according to the described WTRU of arbitrary embodiment among the previous embodiment 56-57, this WTRU also comprises: described receiver and described processor are configured to detect at least one component carrier and are locked to described at least one component carrier.

59, according to the described WTRU of arbitrary embodiment among the previous embodiment 56-58, this WTRU also comprises: described processor is configured to determine the type of described at least one component carrier.

60, according to the described WTRU of arbitrary embodiment among the previous embodiment 56-59, this WTRU also comprises: described processor also is configured under the situation that described at least one component carrier is non-grappling component carrier at least one grappling component carrier be positioned, and wherein said at least one grappling component carrier has carried carrier aggregation information.

Though feature of the present invention and element are described with specific combination, each feature or element can be under the situation that does not have further feature and element use separately, or with or with under the various situations that further feature and element combine do not use.Here method that provides or flow chart can be implemented in computer program, software or the firmware carried out by all-purpose computer or processor, and wherein said computer program, software or firmware are to be included in the computer-readable recording medium in tangible mode.The example of computer-readable storage medium comprises the light medium of magnetizing mediums, magnet-optical medium and the CD-ROM disk of read-only memory (ROM), random-access memory (ram), register, buffer storage, semiconductor memory apparatus, internal hard drive and moveable magnetic disc and so on and digital versatile disc (DVD) and so on.

For instance, appropriate processor comprises the integrated circuit (IC) and/or the state machine of general processor, application specific processor, conventional processor, digital signal processor (DSP), a plurality of microprocessor, one or more microprocessor related with the DSP nuclear phase, controller, microcontroller, application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) circuit, any other type.

The processor that combines with software can be used for realizing radio-frequency (RF) transceiver, is used for using at wireless transmission receiving element (WTRU), subscriber equipment (UE), terminal, base station, radio network controller (RNC) or any main frame.This WTRU can use together in conjunction with the module that realizes with hardware and/or software, such as camera, camara module, video telephone, speaker-phone, vibratory equipment, loud speaker, microphone, TV transceiver, Earphone with microphone, keyboard, bluetooth (FM) radio unit of module, frequency modulation, LCD (LCD) display unit, Organic Light Emitting Diode (OLED) display unit, digital music player, media player, video-game player module, explorer, and/or any wireless lan (wlan) or ultra broadband (UWB) module.

Claims (42)

1. method that is used to handle carrier aggregation of carrying out by wireless transmitter/receiver unit (WTRU), this method comprises:

Reception is used to identify the carrier aggregation information of at least one component carrier, and the one-component carrier wave in wherein said at least one component carrier carries the downlink control channel related with described WTRU;

Detect described downlink control channel;

Down link control information in the described downlink control channel is positioned; And

Come the receiving downlink transmission based on described down link control information.

2. method according to claim 1 is wherein being carried the described carrier aggregation information of indication in the broadcast channel of the control information of sub-district.

3. method according to claim 2, wherein said control information specific to the sub-district is carried as Master Information Block (MIB) or system information block (SIB).

4. method according to claim 1 is wherein indicated about monitoring the carrier aggregation information of which component carrier in described at least one component carrier by in broadcast channel broadcasts, L2/3 signaling or the L1 signaling at least one.

5. method according to claim 1, wherein said down link control information indicating downlink link data authorization message is arranged in the component carrier that carries down link control information.

6. method according to claim 1, wherein said control information indicating downlink link data authorization message is arranged in the component carrier different with the component carrier that carries down link control information.

7. method according to claim 1, wherein said control information indicating downlink link data authorization message is arranged in a plurality of component carriers, and described a plurality of component carriers can comprise the component carrier that carries down link control information.

8. method according to claim 1, wherein said downlink control channel is related with one group of a plurality of component carrier, and wherein said WTRU is configured to detect described downlink control channel and needn't searches for all a plurality of component carriers in described group.

9. method according to claim 1, this method also comprise by use higher level signaling, L1 signaling or implicitly by described at least one transmit one-component carrier wave in the component carrier of downlink control channel and receive described downlink control channel and carried mapping between the component carrier of shared data channel.

10. method according to claim 1, wherein said downlink control channel has carried the index of component carrier.

11. method according to claim 1, wherein said downlink control channel have the carrier wave indication field of the index that has carried component carrier.

12. also comprising, method according to claim 1, this method only on movable component carrier, use discontinuous reception (DRX).

13. also comprising for each component carrier, method according to claim 1, this method all use DRX, to reduce the unlatching duration of comparing obsolete component carrier with the unlatching duration of using maximum component carriers.

14. method according to claim 1 is wherein receiving described downlink control channel to impel the DRX state of described WTRU change on other component carriers on first component carrier.

15. method according to claim 1, wherein definition 2-D DRX mode on all component carriers or subclass.

16. method according to claim 1, wherein a plurality of component carriers use same asset.

17. method according to claim 1, wherein said downlink control channel are used at least one group component carrier wave.

18. method according to claim 1, this method also comprises:

Be received in the Physical Control Format Indicator Channel (PCFICH) that transmits in all component carriers and do not consider the position of described downlink control channel; And

Detect described PCFICH in component carrier, described PCFICH is used for indication and has used what OFDM symbols at transfer of data.

19. method according to claim 1, this method also comprises receiving uplink (UL) dispatch map information, and the uplink grant that wherein will be used for the up link component carrier maps to the down link component carrier and do not consider the asymmetry of uplink/downlink component carrier.

Receive the frequency hopping mode information that is used for uplink grant 20. method according to claim 1, this method also comprise, described uplink grant is expanded on a plurality of down link component carriers.

21. method according to claim 1, this method also comprises receiving uplink (UL) dispatch map information, and wherein uplink grant is encoded together and is mapped at least one down link component carrier and do not consider the asymmetry of uplink/downlink component carrier.

22. method according to claim 1, this method also comprise receiving uplink (UL) dispatch map information, the uplink grant that wherein will be used for one group of up link component carrier maps to the down link component carrier.

23. method according to claim 21, wherein said down link control information comprise up link component carrier index.

24. method according to claim 21, wherein said uplink grant are the polymerizations corresponding to the uplink grant of independent up link component carrier.

25. method according to claim 18, this method also comprise receiving uplink (UL) dispatch map information, each uplink grant that wherein is used for the up link component carrier is mapped to different down link component carriers.

26. method according to claim 21, this method comprise also which uplink carrier uses a plurality of WTRU ID to distinguish which uplink grant maps to.

27. a method that is used to handle carrier aggregation of being carried out by wireless transmitter/receiver unit (WTRU), this method comprises:

Detect at least one component carrier;

Be locked to described at least one component carrier;

Determine the type of described at least one component carrier;

At described at least one component carrier is under the situation of non-grappling component carrier, and at least one grappling component carrier is positioned, and wherein said at least one grappling component carrier has carried carrier aggregation information; And

Come the receiving downlink transmission based on described carrier aggregation information.

28. method according to claim 27, the wherein type of described at least one component carrier of transmission in broadcast channel.

29. method according to claim 27, wherein in Master Information Block or system information block one in carry described at least one component carrier type.

30. method according to claim 27, wherein said definite type that the carrier aggregation information entity is decoded and known described at least one component carrier that also comprises.

31. method according to claim 27, this method also comprises:

On the up link component carrier related, carry out random access procedure with described at least one component carrier;

Obtaining radio resource control (RRC) connects; And

At described at least one component carrier is under the situation of described grappling component carrier, connects to come the reception carrier aggregation information by described RRC.

32. method according to claim 27, this method also comprises:

On the up link component carrier related, carry out random access procedure with described at least one component carrier;

Obtaining radio resource control (RRC) connects; And

At described at least one component carrier is under the situation of non-grappling component carrier, receives the position of described grappling component carrier.

33. method according to claim 27, this method also comprises:

On the up link component carrier related, carry out random access procedure with described at least one component carrier; And

The predetermined message type is decoded, to obtain information about described grappling component carrier.

34. method according to claim 27, wherein at least one idle bit has been indicated the type of described at least one component carrier.

35. method according to claim 34 wherein remains idle bit and has carried carrier aggregation information.

36. method according to claim 34 wherein remains the position that idle bit has been indicated described grappling component carrier.

37. method according to claim 27, wherein said grappling is decoded to broadcast channel by the redundancy check of employing carrier aggregation particular cycle and is implicitly determined.

38. method according to claim 27, wherein the location also comprises:

Use broadcast channel signaling, RRC signaling or insert one in the process message at random described WTRU is directed to described anchor carrier.

39. according to the described method of claim 38, wherein directional commands is coded among one among SIB or the MIB.

40. method according to claim 27, wherein said carrier aggregation information are carried in one in SIB, MIB or the information element (IE).

41. a wireless transmitter/receiver unit (WTRU) that is used to handle carrier aggregation, this WTRU comprises:

Receiver is configured to receive the carrier aggregation information that is used to identify at least one component carrier on broadcast channel, and the one-component carrier wave in wherein said at least one component carrier has carried the downlink control channel related with described WTRU;

Processor is configured to detect described downlink control channel according to described carrier aggregation information, and the down link control information in the described downlink control channel is positioned.

42. a wireless transmitter/receiver unit (WTRU) that is used to handle carrier aggregation, this WTRU comprises:

Receiver;

Processor;

Described receiver and described processor are configured to detect at least one component carrier and are locked to described at least one component carrier;

Described processor is configured to determine the type of described at least one component carrier; And

Described processor also is configured under the situation that described at least one component carrier is non-grappling component carrier at least one grappling component carrier be positioned, and wherein said at least one grappling component carrier has carried carrier aggregation information.

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